I had one contact with a points broker, and they were offering considerably more than 1.22 cents. I did not do business with them, so I can't say what an actual transaction would have involved.
I am taking a guess that you would get more if you had more points to offer. The way these folks do business is to have you book a ticket for their customer. As we all know, the best (theoretical) redemption opportunities are international business and first class travel, but you don't have enough points for that. This is just a guess though.
There is some risk also, in that if you are "found out" your FF account could get cancelled. However, if you are selling the entire balance of the account, the risk is reduced, in that they can't take away what you don't have.
I doubt you will get much help here finding out who is and isn't legit. The transaction itself is a violation of FF program Terms & Conditions, and FT does not permit discussion of transactions that do. Talking about it in the abstract is one thing, but asking "Is RedTop's Air Ticket Service legit?" is pretty much encouraging or at least facilitating that kind of activity. I suspect there are websites where people can post complaints about businesses, although I don't know the names of any.